Marine Life and Sponges

Andrew Walker hosts a video exploring the undersea animal kingdom, focusing on sea sponges. He explains their characteristics, history, and how they function and feed. The video also covers different types of sponges, including encrusting, barrel, and glass sponges. A Q&A session addresses a viewer's question about sea stars, specifically the crown of thorns sea star. The video concludes with an invitation for viewers to ask more questions and stay curious about marine science.

What is the main focus of this year's exploration in the undersea Animal Kingdom?

• Coral reefs

• Sea sponges

• Marine mammals

• Deep-sea fish

How old are the oldest sponge fossils?

• 200 million years

• 400 million years

• 600 million years

• 800 million years

What do sponges use to move water through their bodies?

• Gills

• Fins

• Pores

• Tentacles

Which of the following is NOT a type of nutrient sponges absorb?

• Bacteria

• Plankton

• Minerals

• Small fish

Which type of sponge is known for growing across rocks or hard surfaces?

• Tube sponges

• Barrel sponges

• Glass sponges

• Encrusting sponges

What is a unique feature of barrel sponges?

• They are the smallest sponges

• They have a large central cavity

• They are transparent

• They glow in the dark

What material do glass sponges use to form their structures?

• Iron

• Carbon

• Silica

• Calcium

What is the favorite sea star of the host, Andrew Walker?

• Sunflower sea star

• Brittle star

• Crown of thorns sea star

• Blue sea star

What is a potential problem caused by the crown of thorns sea star?

• Destruction of coral reefs

• Overpopulation of coral

• Pollution of water

• Increase in sea temperature

How can viewers ask questions about marine life?

• By sending a letter

• By visiting a website

• By calling a hotline

• By emailing Andrew